The United Nation’s Intergovernmental Panel on Climate Change (IPCC) Assessment Report Four (AR-4) of 2007, concerning the influence of rising levels of CO2 on global increases of tropical cyclone (TC) activity is inaccurate and a disgrace to the scientific community. The public expected there would be rigor and objectivity coming out of such an important document which shared a Nobel Peace Prize with former US Vice President Al Gore. The summary of TC activity of this report was based on discredited peer-reviewed papers whose lack of authenticity was known before the report was released. A select cadre of global warming advocates (with little TC knowledge or experience) bent their objectivity to drive this report toward a desired (but faulty) conclusion that global TC activity was increasing in frequency and intensity. They further implied that a large portion of this alleged TC increase could likely be attributed to rising levels of CO2.

This paper brings forth observational and theoretical evidence to show that rising levels of CO2 have not had any observable association with increases in global tropical cyclone frequency and intensity. In fact, levels have been trending downward over the last 20 years. This paper discusses why we should not be able to measure any potential future CO2-TC association for many decades, and if any such potential future relationship should ever be able to be isolated, it would be quite small. It also dissects the many observational and theoretical errors of the IPCC-AR4 concerning its reported past and likely future increases of global TC activity.

This paper extends the list of IPCC-AR4’s many questionable conclusions and misrepresentation beyond those that have already been earlier pointed out such as the Himalayas becoming snow-free by 2035, the Arctic Ocean possibly becoming ice-free in coming decades, and the possible coming Amazon rainforest destruction. The issuance of these erroneous IPCC reports does much damage. They should be terminated.